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ÎÒÔÚÇó·´Ó¦¶¯Á¦Ñ§Ê±Óöµ½Ò»¸ö·Ç³£¼¬ÊÖµÄÎÊÌ⣬Çë´ó¼Ò°ïæ½â¾öһϣ¬ÏȶÔÿһ¸ö¹Ø×¢±¾ÌùµÄÈ˱íʾ¸Ðл£¡ ÎÊÌâÃèÊö£º ÓÐÈý¸ö¿ÉÄæ·´Ó¦×é³ÉµÄ·´Ó¦ÌåϵÈçÏ£º TG+M¡ú¡ûDG+ME (ÕýÄæ·´Ó¦ËÙÂʳ£Êý·Ö±ðΪk1¡¢k2) DG+M¡ú¡ûMG+ME (ÕýÄæ·´Ó¦ËÙÂʳ£Êý·Ö±ðΪk3¡¢k4) MG+M¡ú¡ûGL+ME (ÕýÄæ·´Ó¦ËÙÂʳ£Êý·Ö±ðΪk5¡¢k6) ½¨Á¢·´Ó¦ÒÔÉÏ·½³ÌµÄÊýѧģÐÍÈçÏ£º dTG/dt=-k1[TG][M]+ k2[DG][ME] dDG/dt=k1[TG][M]- k2[DG][ME] ¨Ck3[DG][M]+ k4[MG][ME] dMG/dt= k3[DG][M]- k4[MG][ME] ¨Ck5[MG][M]+ k6[GL][ME] dME/dt= k1[TG][M]- k2[DG][ME]+k3[DG][M]- k4[MG][ME] +k5[MG][M]- k6[GL][ME] ÆäÖÐTG¡¢DG¡¢MG¡¢MEµÄŨ¶ÈÊǿɲⶨµÄ£¬¸÷ÎïÖÊŨ¶È¼ä´æÔÚÈçϹØÏµ£º [GL]=[TG]0-[TG]-[DG]-[MG]= 0.6380-[TG]-[DG]-[MG] ; [M]=[M]0-[ME]=4.0626-[ME]; ·½³Ì³õʼֵΪ [TG]0=0.6380 [DG]0=0 [MG]0=0 [GL]0=0 [ME]0=0 [M]0=4.0626 ÎÒÓÃMATLABÇó½âijһÌõ¼þÏµĶ¯Á¦Ñ§³£Êýk£¬³ÌÐòÈçÏ£º clear all k0 = [1 1 3 1 5 1]; % ËæÒâ¸ø¶¨µÄ²ÎÊý³õÖµ lb = [0 0 0 0 0 0]; % ËæÒâ¸ø¶¨µÄ²ÎÊýÏÂÏÞ ub = [1000 1000 1000 1000 1000 1000]; % ËæÒâ¸ø¶¨µÄ²ÎÊýÉÏÏÞ X0=[0.638;0;0;0]; %t=0ʱ¿ÌËÄÖÖÎïÖÊTG¡¢DG¡¢MG¡¢MEµÄ³õʼŨ¶È Xexp=... [0.6380 0 0 0 0.1512 0.1088 0.1244 1.0757 0.0955 0.0816 0.1454 1.2740 0.0719 0.0632 0.1431 1.3858 0.0500 0.0493 0.1400 1.4838 0.0451 0.0436 0.1283 1.5247 0.0361 0.0351 0.1226 1.5762 0.0346 0.0301 0.1028 1.6149 0.0261 0.0282 0.1016 1.6460 0.0237 0.0257 0.0977 1.6630 ]; % 25¶È0.8%´ß»¯¼ÁÌõ¼þϲ»Í¬Ê±¼ä£¨0 0.5 1.5 2 3 4 5 7 10min£©¸÷Ũ¶ÈÊý¾Ý % µÚÒ»ÖÖ¼ÆËã·½·¨£¬Ê¹Óú¯Êýfmincon()½øÐвÎÊý¹À¼Æ [k,fval,flag] = fmincon(@jlzengObjFmincon,k0,[],[],[],[],lb,ub,[],[],X0,Xexp); fprintf('\nʹÓú¯Êýfmincon()¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ:\n') fprintf('\tk1 = %.4f\n',k(1)) fprintf('\tk2 = %.4f\n',k(2)) fprintf('\tk3 = %.4f\n',k(3)) fprintf('\tk4 = %.4f\n',k(4)) fprintf('\tk5 = %.4f\n',k(5)) fprintf('\tk6 = %.4f\n',k(6)) fprintf(' The sum of the squares is: %.1e\n\n',fval) k_fmincon = k; %µÚ¶þÖÖ¼ÆËã·½·¨£¬Ê¹Óú¯ÊýLsqnonlin()½øÐвÎÊý¹À¼Æ [k,resnorm,residual,exitflag,Output,lambda,jacobian]=... lsqnonlin(@jlzengObjLsqnonlin,k0,lb,ub,[],X0,Xexp); ci=nlparci(k,residual,jacobian); fprintf('\n\nʹÓÃlsqnonlin()º¯Êý¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ£º\n'),Output fprintf('\nʹÓú¯Êýlsqqnonlin()¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ:\n') fprintf('\tk1 = %.4f\n',k(1)) fprintf('\tk2 = %.4f\n',k(2)) fprintf('\tk3 = %.4f\n',k(3)) fprintf('\tk4 = %.4f\n',k(4)) fprintf('\tk5 = %.4f\n',k(5)) fprintf('\tk6 = %.4f\n',k(6)) fprintf(' The sum of the squares is: %.1e\n\n',fval) k_fmincon = k; Èý¸ömÎļþÈçÏ£º function dXdt=jlzengkinetic(t,X,k) %½¨Á¢Î¢·Ö·½³Ì×飬¹©oed23sµ÷Óà dXdt=[ (-k(1)*X(1)*(4.0626-X(4))+k(2)*X(2)*X(4)) (k(1)*X(1)*(4.0626-X(4))-k(2)*X(2)*X(4)-k(3)*X(2)*(4.0626-X(4))+k(4)*X(3)*X(4)) (k(3)*X(2)*(4.0626-X(4))-k(4)*X(3)*X(4)-k(5)*X(3)*(4.0626-X(4))+k(6)*(0.638-X(1)-X(2)-X(3))*X(4)) (k(1)*X(1)*(4.0626-X(4))-k(2)*X(3)*(4.0626-X(4))+k(3)*X(2)*(4.0626-X(4))-k(4)*X(3)*X(4)+k(5)*X(3)*(4.0626-X(4))-k(6)*(0.638-X(1)-X(2)-X(3))*X(4))]; %-------------------------------------------------- function f = jlzengObjFmincon(k,X0,Xexp) %½¨Á¢Ê¹ÓÃfmincon()½øÐвÎÊý¹À¼ÆµÄº¯Êý tspan = [0 0.5 1 1.5 2 3 4 5 7 10]; [t X] = ode23s(@jlzengkinetic,tspan,X0,[],k); f = sum((X(:,1)-Xexp(:,1)).^2) + sum((X(:,2)-Xexp(:,2)).^2) ... + sum((X(:,3)-Xexp(:,3)).^2) + sum((X(:,4)-Xexp(:,4)).^2); %¸øÎïÖÊŨ¶ÈµÄ¼ÆËãÖµ %------------------------------------------------------ function f = jlzengObjLsqnonlin(k,X0,Xexp) %ÔÚÇ°ÃæÒѾÓÃfminconÇóµÃ²ÎÊýµÄ»ù´¡ÉÏʹÓÃLsqnonlin¶Ô²ÎÊý½øÐиü¾«È·µÄ¼ÆËã tspan =[0 0.5 1 1.5 2 3 4 5 7 10]; [t X] = ode23s(@jlzengkinetic,tspan,X0,[],k); f1 = X(:,1) - Xexp(:,1); f2 = X(:,2) - Xexp(:,2); f3 = X(:,3) - Xexp(:,3); f4 = X(:,4) - Xexp(:,4); f = [f1; f2; f3; f4]; %------------------------------------------------------- ÔËÐнá¹û·¢ÏÖ1)Á½ÖÖ·½·¨Çó³öµÄkÖµ²î±ð¼«´ó£»2£©²»¹Ü½«ÄÇ×ékÖµ´øÈë[t X] = ode23s(@jlzengkinetic,tspan,X0,[],k)Çó³öµÄŨ¶ÈÓëʵ¼ÊŨ¶È²î±ðºÜ´ó£»3£©ÈÎÒâ¸ø¶¨µÄkÖµµÄÆðʼֵ¶Ô½á¹ûÓ°Ï켫´ó¡£ Çë¸ßÊÖ°ïæ£¡ Èç¹û»¹ÓÐû±íÊöÇå³þµÄ£¬ÇëÌá³öÀ´. [ Last edited by sunxiao on 2009-3-8 at 11:17 ] |
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ÎÒ¿´ÁËÒ»ÏÂÄãµÄ·½·¨£¬¸Ð¾õºÜÐÂÓ±£¬ÊÇÒ»ÖÖ´¿´âµÄÊýÖµ½â·¨£¬Ïë±ØÄãµÄMATLAB¹¦µ×²»Ç³¡£ÄãÖ÷ÒªÊÇÏëͨ¹ýÁ½¸öÓÅ»¯¹¤¾ßÏ亯ÊýÀûÓÃ×îС¶þ³Ë·¨½â΢·Ö·½³Ì×é½ø¶øÇó³öËÙÂʳ£Êý¡£µ«ÊÇЧ¹û²»ºÃ£¬ÎÒÏëÄãÏÂÃæµÄ·ÖÎöÊÇÓеÀÀíµÄ£¬¾ÍËã·¨ÓÐЧÐÔ¶øÑÔfminconÕâ¸öº¯Êý¿Ú±®²»ÊǺܺ㬶àÊý¶¼ÊÇÓÃLINGOÈí¼þÇóÓÅ»¯ÎÊÌ⣬¸ü±ð˵Çó΢·Ö·½³Ì×éÁË£¬¶øÇÒ͸Ã÷¶ÈÒ²²»¸ßºÃÏñÔÚ½â¾öÒ»¸öºÚÏäÎÊÌ⣬Çó½â¶Ô³õʼÌõ¼þºÜÃô¸Ð¡£ ÎÒÕâÀïÓиöÏë·¨½ö¹©Äã²Î¿¼£º Õâ¸öÎÊÌâµÄ×îÖÕÄ¿µÄÊÇÇó×î¼ÑËÙÂʳ£ÊýÒÔ¾¡Á¿Âú×ã΢·Ö·½³Ì×飬ÏÖÔÚ£¬ÄãÓÐÁ˸÷¸öÎïÖÖËæÊ±¼ä±ä»¯µÄŨ¶È£¬Èç¹ûÖªµÀŨ¶ÈËæÊ±¼äµÄ±ä»¯ËÙÂÊ£¬¾Í¿ÉÒÔÖ±½Ó´úÈë΢·Ö·½³Ì×éÓ¦ÓÃ×îС¶ø³ËÇó³öËÙÂʳ£Êýk¡£ Ũ¶È±ä»¯ËÙÂʵÄ×î¼Ñ¹À¼Æ£º¿ÉÒÔ¸ù¾ÝÄãµÄʵÑéÊý¾Ý¹¹Ôì³öÔÚʵÑ鷶ΧÄÚ·ûºÏ½ÏºÃµÄ¸÷¸öÎïÖÖµÄŨ¶È·½³Ì¡£ÒÔÏÂÊÇÄâºÍ½á¹û£º /////////////////////////////////////////////////////////////////////////////// TG: f(x) = a*exp(b*x) + c*exp(d*x) Coefficients (with 95% confidence bounds): a = 0.5502 (0.5149, 0.5856) b = -3.983 (-4.797, -3.17) c = 0.08751 (0.05922, 0.1158) d = -0.1857 (-0.2901, -0.08124) Goodness of fit: SSE: 0.0004627 R-square: 0.9985 Adjusted R-square: 0.9978 RMSE: 0.008782 DG: f(x) = (p1*x^2 + p2*x + p3) / (x^2 + q1*x + q2) Coefficients (with 95% confidence bounds): p1 = 0.01908 (0.01341, 0.02475) p2 = 0.05717 (0.01411, 0.1002) p3 = -1.43e-007 (-0.0008759, 0.0008756) q1 = -0.2444 (-0.8719, 0.3831) q2 = 0.1788 (0.04132, 0.3162) Goodness of fit: SSE: 1.816e-005 R-square: 0.9979 Adjusted R-square: 0.9963 RMSE: 0.001906 MG: f(x) = (p1*x^2 + p2*x + p3) / (x^2 + q1*x + q2) Coefficients (with 95% confidence bounds): p1 = 0.07364 (0.04582, 0.1015) p2 = 0.3095 (-0.1137, 0.7328) p3 = 1.802e-005 (-0.00794, 0.007976) q1 = 0.9642 (-1.498, 3.426) q2 = 0.6633 (0.1897, 1.137) Goodness of fit: SSE: 0.0001089 R-square: 0.9933 Adjusted R-square: 0.988 RMSE: 0.004666 ME: f(x) = (p1*x + p2) / (x^2 + q1*x + q2) Coefficients (with 95% confidence bounds): p1 = 2169 (-1.654e+004, 2.088e+004) p2 = 0.9198 (-23.22, 25.06) q1 = 1265 (-9708, 1.224e+004) q2 = 406.4 (-3050, 3862) Goodness of fit: SSE: 0.003249 R-square: 0.9986 Adjusted R-square: 0.9978 RMSE: 0.02327 /////////////////////////////////////////////////////////////////////// Õ⼸¸öŨ¶È·½³ÌµÄÄâºÍ½á¹ûÈçÈ總¼þÖÐËùʾ¡£ È»ºó¾Í¿ÉÒÔ¼ÆËãÔÚʵÑéʱ¼äµãÉÏTG, DG, MG, MEµÄŨ¶È¶Ôʱ¼äµÄµ¼ÊýÁË£¬½á¹ûÈçÏ£º//////////////////////////////////////////////////////////////////////// >> dTGdt=[-2.20812330989885;-0.313903194394831;-0.0543072642775238;-0.0178664548644437;-0.0119669262873315;-0.00932216291313879;-0.00773110042346866;-0.00642090783831632;-0.00442930197092527;-0.00253772213004114]' dTGdt = -2.2081 -0.3139 -0.0543 -0.0179 -0.0120 -0.0093 -0.0077 -0.0064 -0.0044 -0.0025 >> dDGdt=[0.319813865326457;-0.0194568056055164;-0.0513088546928754;-0.0279068843505723;-0.0164124937537988;-0.00737171342598024;-0.00411902140843388;-0.00261612659035434;-0.00131890646666286;-0.000639095343223927;]' dDGdt = 0.3198 -0.0195 -0.0513 -0.0279 -0.0164 -0.0074 -0.0041 -0.0026 -0.0013 -0.0006 >> dMGdt=[0.466367050839715;0.0999072143408668;0.00933499024234685;-0.00972884650823934;-0.0127379996363272;-0.0104546020606972;-0.00764618068387975;-0.00566858666344666;-0.00339187374122912;-0.00186232961806277;]' dMGdt = 0.4664 0.0999 0.0093 -0.0097 -0.0127 -0.0105 -0.0076 -0.0057 -0.0034 -0.0019 >> dMEdt=[5.28500993498458;0.818198974835815;0.315950868952596;0.165592835535058;0.101261692838514;0.0484953510802743;0.0278523652553689;0.0177021334686043;0.00842980322026890;0.00327667396220621;]' dMEdt = 5.2850 0.8182 0.3160 0.1656 0.1013 0.0485 0.0279 0.0177 0.0084 0.0033 >> //////////////////////////////////////////////////////////////////////////// Ö®ºóµÄ¹¤×÷¾ÍÊǰÑÕâËÄ×éÊý¾ÝºÍʵÑéÊý¾Ý´úÈë΢·Ö·½³Ì×飬Çó³ö×î¼ÑËÙÂʳ£Êý¡£ |
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